3. Avoiding tariffs is the top priority

Theresa May would have to do an incredible u-turn to recommend the UK joined the European Free Trade Association (Efta) which allows non-EU members Iceland, Liechtenstein, Norway, and Switzerland to access the single market.

However, the PM wants “maximum freedom to trade” with European markets and avoiding tariffs is a prime priority for the Welsh leaders, too.

Ms Wood said: “Continued single market participation could include Efta membership and/or European Economic Area involvement or a bespoke deal which allows the UK to participate in the single market without barriers or tariffs, and that is the key point for us here.”

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4. Leanne insists freedom of movement should not be seen as a problem

The Plaid leader said: “The principle of freedom of movement of European citizens and workers is something that we value and something which has benefited Wales. We do not accept that free movement is a problem...

“Our white paper outlines ways to uphold and implement the principle in a way that is consistent with participation in the single market.”

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5. Neither Carwyn now Leanne is excited by the idea of a free trade agreement with the United States

Carwyn Jones and Leanne Wood are not pinning their hopes on Theresa May doing a deal with Donald Trump (Image: PA)

The First Minister said: “Well, the US is 3,500 miles away...

"Having listened to the President’s inauguration speech where he talked about America first and having listened to him carefully saying that he is instinctively against free trade agreements, it’s kinda hard to see how we’d get a free trade agreement that would be in Britain’s interests.”

He warned against a situation where “we are forced to privatise public services”.

Ms Wood said she was concerned that such a deal would be similar to the controversial proposals for the UK-US Transatlantic Trade and Investment Partnership (TTIP).

“It sounds to me that that deal would be very one-sided and wouldn’t be in our favour,” she said.

6. Carwyn doesn’t want you to think he is trying to reverse the referendum

Carwyn Jones and Leanne Wood urging people to vote to stay in the EU during last year's referendum campaign (Image: Andrew James)

He said: “It’s time to move on beyond the referendum, no-one’s trying to refight it.

"We’ve got to move beyond the divisive arguments because let’s not pretend the UK hasn’t been divided by this issue because it has.

“We’ve got to move on particularly from the intolerance that’s plagued our politics over the last year.

"The decision is made – the UK will leave the European Union.

“The challenge we all face now is ensuring that we get the best possible deal for Wales and indeed the rest of the UK.”

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7. The First Minister says there are areas ‘where the UK doesn’t exist’

Fishing trawler

Mr Jones stressed the need for Welsh priorities to be at the heart of the Brexit deal.

He said: “There are some areas like farming and fisheries where the UK doesn’t exist.

"Everything is either European, from our perspective, or Welsh; and so when it comes to negotiating with the EU on farming and fisheries, in effect it’s the English Government – not the UK Government.

“So it’s hugely important to make sure that we are all part of those discussions to make sure we get a deal that’s good for all four nations of the UK rather than just thinking about one.”

8. Plaid Cymru is working on a Plan B

Leanne Wood at the launch of the white paper at the Welsh Government's London headquarters

Ms Wood signalled her party will have a back-up plan if Theresa May does not take Plaid concerns on board.

She said: “[We] take the Prime Minister’s words at face value. We are entering into this process in that spirit.

“But Plaid Cymru is already working on a Plan B in the event that this is rejected. We’ve got contingency plans that we’re already looking at because protecting Wales’ national interest is our top priority and if can’t do it through this process then we’ll look at all other options whereby we will be able to do that.”

9. Carwyn fears the future of the UK is at stake

He said: “I think there are dangers for the UK here. The UK is as divided as it’s ever been...

“You’ve got divisions amongst the generations. The UK has to be careful it doesn’t fall apart because of a bad deal...

“What I’d prefer to see is a deal where the four parliaments ratify it, where there’s as much buy-in as possible.”